From 2cc78ff78c0af502b040d4527212e29e02d3231d Mon Sep 17 00:00:00 2001 From: Ohad Ben-Cohen Date: Thu, 16 Sep 2010 01:22:04 +0200 Subject: [PATCH] wl1271: propagate set_power's return value Make it possible for the set power method to indicate a success/failure return value. This is needed to support more complex power on/off operations such as SDIO power manipulations. Signed-off-by: Ohad Ben-Cohen Acked-by: Luciano Coelho Signed-off-by: John W. Linville --- drivers/net/wireless/wl12xx/wl1271.h | 2 +- drivers/net/wireless/wl12xx/wl1271_io.h | 9 ++++++--- drivers/net/wireless/wl12xx/wl1271_main.c | 4 +++- drivers/net/wireless/wl12xx/wl1271_sdio.c | 15 +++++++++------ drivers/net/wireless/wl12xx/wl1271_spi.c | 4 +++- 5 files changed, 22 insertions(+), 12 deletions(-) diff --git a/drivers/net/wireless/wl12xx/wl1271.h b/drivers/net/wireless/wl12xx/wl1271.h index dd3cee6ea5bb..faa5925efe30 100644 --- a/drivers/net/wireless/wl12xx/wl1271.h +++ b/drivers/net/wireless/wl12xx/wl1271.h @@ -313,7 +313,7 @@ struct wl1271_if_operations { bool fixed); void (*reset)(struct wl1271 *wl); void (*init)(struct wl1271 *wl); - void (*power)(struct wl1271 *wl, bool enable); + int (*power)(struct wl1271 *wl, bool enable); struct device* (*dev)(struct wl1271 *wl); void (*enable_irq)(struct wl1271 *wl); void (*disable_irq)(struct wl1271 *wl); diff --git a/drivers/net/wireless/wl12xx/wl1271_io.h b/drivers/net/wireless/wl12xx/wl1271_io.h index bc806c74c63a..c1f92e65ded0 100644 --- a/drivers/net/wireless/wl12xx/wl1271_io.h +++ b/drivers/net/wireless/wl12xx/wl1271_io.h @@ -144,10 +144,13 @@ static inline void wl1271_power_off(struct wl1271 *wl) clear_bit(WL1271_FLAG_GPIO_POWER, &wl->flags); } -static inline void wl1271_power_on(struct wl1271 *wl) +static inline int wl1271_power_on(struct wl1271 *wl) { - wl->if_ops->power(wl, true); - set_bit(WL1271_FLAG_GPIO_POWER, &wl->flags); + int ret = wl->if_ops->power(wl, true); + if (ret == 0) + set_bit(WL1271_FLAG_GPIO_POWER, &wl->flags); + + return ret; } diff --git a/drivers/net/wireless/wl12xx/wl1271_main.c b/drivers/net/wireless/wl12xx/wl1271_main.c index 8e55cf8d509d..af26150109e3 100644 --- a/drivers/net/wireless/wl12xx/wl1271_main.c +++ b/drivers/net/wireless/wl12xx/wl1271_main.c @@ -621,7 +621,9 @@ static int wl1271_chip_wakeup(struct wl1271 *wl) int ret = 0; msleep(WL1271_PRE_POWER_ON_SLEEP); - wl1271_power_on(wl); + ret = wl1271_power_on(wl); + if (ret < 0) + goto out; msleep(WL1271_POWER_ON_SLEEP); wl1271_io_reset(wl); wl1271_io_init(wl); diff --git a/drivers/net/wireless/wl12xx/wl1271_sdio.c b/drivers/net/wireless/wl12xx/wl1271_sdio.c index b5d9565f659f..1d5dc727167d 100644 --- a/drivers/net/wireless/wl12xx/wl1271_sdio.c +++ b/drivers/net/wireless/wl12xx/wl1271_sdio.c @@ -159,35 +159,38 @@ static void wl1271_sdio_raw_write(struct wl1271 *wl, int addr, void *buf, wl1271_error("sdio write failed (%d)", ret); } -static void wl1271_sdio_power_on(struct wl1271 *wl) +static int wl1271_sdio_power_on(struct wl1271 *wl) { struct sdio_func *func = wl_to_func(wl); sdio_claim_host(func); sdio_enable_func(func); sdio_release_host(func); + + return 0; } -static void wl1271_sdio_power_off(struct wl1271 *wl) +static int wl1271_sdio_power_off(struct wl1271 *wl) { struct sdio_func *func = wl_to_func(wl); sdio_claim_host(func); sdio_disable_func(func); sdio_release_host(func); + + return 0; } -static void wl1271_sdio_set_power(struct wl1271 *wl, bool enable) +static int wl1271_sdio_set_power(struct wl1271 *wl, bool enable) { /* Let the SDIO stack handle wlan_enable control, so we * keep host claimed while wlan is in use to keep wl1271 * alive. */ if (enable) - wl1271_sdio_power_on(wl); + return wl1271_sdio_power_on(wl); else - wl1271_sdio_power_off(wl); - + return wl1271_sdio_power_off(wl); } static struct wl1271_if_operations sdio_ops = { diff --git a/drivers/net/wireless/wl12xx/wl1271_spi.c b/drivers/net/wireless/wl12xx/wl1271_spi.c index c3fdab75ad2a..de56d8d9ee66 100644 --- a/drivers/net/wireless/wl12xx/wl1271_spi.c +++ b/drivers/net/wireless/wl12xx/wl1271_spi.c @@ -312,10 +312,12 @@ static irqreturn_t wl1271_irq(int irq, void *cookie) return IRQ_HANDLED; } -static void wl1271_spi_set_power(struct wl1271 *wl, bool enable) +static int wl1271_spi_set_power(struct wl1271 *wl, bool enable) { if (wl->set_power) wl->set_power(enable); + + return 0; } static struct wl1271_if_operations spi_ops = { -- 2.20.1